@article{DAN_1982_263_4_a3,
     author = {V. F. Butuzov and A. V. Nesterov},
     title = {On some singularly perturbed problems with nonsmooth boundary functions},
     journal = {Doklady Akademii Nauk},
     pages = {786--789},
     publisher = {mathdoc},
     volume = {263},
     number = {4},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1982_263_4_a3/}
}